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Liquid sorption characterisation of Norway spruce heartwood and sapwood using a multicycle Wilhelmy plate method
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.ORCID iD: 0000-0002-4760-3787
KTH .ORCID iD: 0000-0002-9156-3161
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
2018 (English)In: International Wood Products Journal, ISSN 2042-6445, E-ISSN 2042-6453Article in journal (Refereed) Published
Abstract [en]

A multicycle Wilhelmy plate method was applied to study the water and octane sorption behaviour of small Norway spruce veneers. Dry heart- and sapwood samples of varying density were investigated. The results showed a correlation between the porosity and the sorption of octane for all samples, i.e. a higher wood porosity resulted in higher octane sorption. However, no difference in octane sorption was found between heart- and sapwood samples of similar density. The water sorption behaviour was difficult to interpret, probably due to the influence of surface-active wood extractives. It is suggested that the presence of such extractives, particularly in the sapwood samples, increases the sorption of water due to a significant decrease in its apparent surface tension. Hence, the results indicate that the liquid water sorption of spruce heart- and sapwood is strongly influenced by variations in the extractives content rather than by the micromorphology.

Place, publisher, year, edition, pages
2018.
Keywords [en]
Picea abies, water, octane, extractives, permeability, pit aspiration, coating, durability
National Category
Wood Science
Identifiers
URN: urn:nbn:se:lnu:diva-73984OAI: oai:DiVA.org:lnu-73984DiVA, id: diva2:1204307
Available from: 2018-05-07 Created: 2018-05-07 Last updated: 2018-05-07

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Sjökvist, TinhBlom, Åsa

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Sjökvist, TinhWålinder, Magnus E.P.Blom, Åsa
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf